<template>
  <div ref="wrapper">
    <div>
      <slot></slot>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'

export default {
  name: "scroll",
  data() {
    return {
      scroll: {
        type: Object,
        default() {
          return {}
        }
      },
      // scroll:null,
    }
  },
  //接收父组件来的值
  props: {
    probeType: {
      type: Number,
      default: 0
    },
    pullUpLoad: {
      type: Boolean,
      default() {
        return false
      }
    }
  },
  mounted() {
    //1.创建BScroll对象
    this.scroll = new BScroll(this.$refs.wrapper, {
      probeType: this.probeType,
      pullUpLoad: this.pullUpLoad,
      click: true,
    })
    //2.监听滚动位置
    if(this.probeType===2||this.probeType===3){
         this.scroll.on('scroll', (postion) => {
      // console.log(postion);
      this.$emit('scroll', postion)
    })
    }
   
    //3.监听上拉事件
    if(this.pullUpLoad){
       this.scroll.on('pullingUp', () => {
      // console.log(11);
      this.$emit('pullingUp')

    })
    }
   

  },
  methods: {
    scrollTo(x, y, time = 300) {
      this.scroll && this.scroll.scrollTo(0, 0, time)
    },
    finishPullUp() {
      this.scroll && this.scroll.finishPullUp()
    },
    refresh() {
      this.scroll && this.scroll.refresh()
    }

  }
}
</script>

<style scoped>
</style>
